grails:org.hibernate.MappingException:关联引用未映射类：java.util.Set

有人熟悉以下错误吗？ 我将Hibernate4+与Grails2.4.4一起使用

这是整个错误日志：

|Loading Grails 2.4.4
|Configuring classpath
.
|Environment set to development
.................................
|Packaging Grails application
...........
|Compiling 1 source files
.........................
|Running Grails application
Error |
2015-03-19 16:54:11,496 [localhost-startStop-1] ERROR context.GrailsContextLoaderListener  - Error initializing the application: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: java.util.Set
Message: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: java.util.Set
    Line | Method
->>  266 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1142 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    617 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: java.util.Set
->>  266 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1142 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    617 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: java.util.Set
->>  266 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1142 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    617 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread
Caused by MappingException: Association references unmapped class: java.util.Set
->>  266 | run       in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1142 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    617 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run       in java.lang.Thread
Error |
Forked Grails VM exited with error

问题是：

• 我的一个域类包含了一个大写字母，它不应该在其中（‘利用’而不是‘利用’）

解决方案：

旧代码：

package core

class Scenario {
    String name

    static belongsTo = [ Exploit ]

    static hasMany = [ Exploits : Exploit ]

    static constraints = {
        name nullable: false , maxSize: 32
    }
}

新代码：

package core

class Scenario {
    String name

    static belongsTo = [ Exploit ]

    static hasMany = [ exploits : Exploit ]

    static constraints = {
        name nullable: false , maxSize: 32
    }
}

---

它起作用了

如果在嵌入式对象中使用类似hasMany的集合，也会出现此错误

复合元素不能包含嵌套集合

“复合元素”与@Embeddeble对象相同。因此，@embeddeble对象的集合不可能包含集合。它们必须升级为@Entity对象

---

请参阅

在将项目从Grails2.3.11升级到2.5.4之后，我遇到了同样的问题。事实证明，必须更新的是spring安全性生成的类User、Role和UserRole。它们有过时的getter和setter，现在被解释为bean属性。

我得到了类似的异常，但命名是正确的

问题是有两个数据源使用-用于读取和写入副本

此问题的修复程序添加了以下内容：

static mapping = {
    datasource 'ALL'
}